高分辨率声光偏转技术研究  

Research on High Resolution Acousto-optic Deflection Technique

作　　者：周树生[1] 田祥芳 刘彪[1] 

机构地区：[1]四川压电与声光技术研究所

出　　处：《压电与声光》1990年第3期10-14,共5页Piezoelectrics & Acoustooptics

摘　　要：本文介绍了本所高分辨率声光偏转技术的最新研究成果.采用TeO_2单晶体作声光介质,大通光孔径结构,研制出了宽频带、高衍射效率、频率分辨率高的高分辨率声光偏转器.器件同采用频率合成技术的高频率稳定度驱动信号源在实际光路中联调,实现了工作光波长632.8nm(He-Ne激光),中心频率70±4MHz,带宽>40MHz,频率分辨率不劣于20kHz,器件的光偏转角度同驱动信号频率呈良好的线性.这一新型的声光技术可用在激光缩微技术,射电天文中的频谱仪,声光侦察接收机,光计算机等方面,其应用前景十分广阔.This paper presents a new research achievement of high resolution acousto-optic deflection technique in out institute. The high resolution acousto-optic deflectors with big optic aperture have high diffraction efficiency, high frequency resolution and wide band, using high quality TeO2 crystal as the acousto-optic medium. The def-lectors is adjusted by its driving power supply with frequency synthetic technique in the practical system. The results show that their operational wavelength is 632.8 nm (He-Ne laser) , center frequency is 70±4MHz, bandwidth>40MHz (at 3dB), frequency resolution≤20kHz, and the optical deflection angles exhibit good linearty with driving signal frequency. The technique is a new way of acousto-optic techno-logy, it is suitable for laser miniature,acousto-optic spectrum analyzer in radio astro-nemy, reconnaissance receiver and optical computer etc, and will find wide appli-cations

关 键 词：声光偏转技术 声光偏转器 

分 类 号：TN65[电子电信—电路与系统]